The first case of vaginal prolapse, type III, in ovariohysterectomised 3-year-old Chow-Chow breed bitch, weighing 19 kg, was described. The bitch had developed vaginal prolapse four months after the ovariohysterectomy. Circumferential excision of the prolapsed tissue was performed and finally the bitch recovered as free of the problems. There was no evidence of recurrence of the prolapse in the period of following two years.